제라늄(Pelargonium graveolense) 캘러스의 재분화 및 peroxidase isozyme 발현패턴 변화

Plant Regeneration of Geranium (Pelargonium graveolense) Callus and Changes of Peroxidase Isozyme Pattern

  • Lee, Seok-Hyun (Department of Life Science, College of Natural Science, Soonchunhyang University) ;
  • Lee, Mi-Young (Department of Life Science, College of Natural Science, Soonchunhyang University)
  • 발행 : 2000.08.31

초록

방향성 제라늄(Pelargonium graveolense)의 옆병을 취하여 여러 가지 농도의 식물생장조절제가 포함된 MS배지에서 캘러스를 유도하였다. 2 mg/l NAA와 0.5 mg/l BAP가 함유된 MS배지와 2 mg/l 2,4-D와 0.5 mg/l BAP가 함유된 MS배지에서 최대 70% 이상의 캘러스가 유도되었으나, 2,4-D나 NAA 혹은 BAP 단독 처리군에서는 캘러스가 유도되지 않았다. 유도된 캘러스를 0.05 mg/l NAA와 0.5 mg/l BAP가 처리된 MS배지로 옮겼을 때 약 5주 후 캘러스당 최대 14개의 신초가 유도되었고, 이를 호르몬이 포함되지 않은 발근유도 해지로 옮겨서 약 3주간 배양했을 때 최대의 뿌리가 유도되었다. 호르몬 조성에 따른 제라늄 캘러스의 peroxidase(POD)활성변화를 조사했을 때 NAA와 BAP 처리군이 2,4-D와 BAP 처리군보다 전 배양기간동안 높은 POD 비활성을 나타내었다. 호르몬조성에 따른 POD isozyme의 발현양상을 비교해 보면 cathodic POD의 경우는 NAA와 BAP 처리군에서 주로 POD C3가 발현되었으나 2,4-D와 BAP 처리군에서는 주로 POD C1이 발현되었다. Anodic POD의 경우 POD A1, A2와 A3가 이 두 호르몬 처리군에서 모두 비슷한 수준으로 발현하였다.

Callus was induced from the petioles of scented-geranium (Pelargonium graveolense) in MS medium containing various concentrations of plant growth regulators. The highest frequency of more than 70% of callus was induced in 2 mg/l NAA and 0.5 mg/l BAP or 2 mg/l 2,4-D and 0.5 mg/l BAP combined treatment, while not in 2,4-D, NAA or BAP alone. When the callus was transferred to the MS medium containing 0.05 mg/l NAA and 0.5 mg/l BAP, were highest intensity of shoot formation, 14 shoots/callus, was induced after 5 weeks. The highest rooting was observed on hormone-free rooting media from the regenerated shoots after 3 weeks, indicating that the regeneration from geranium callus might be possible by changing the hormone ratios. Peroxidase (POD) specific activities in callus induced from 2 mg/l NAA and 0.5 mg/l BAP were higher than those of 2 mg/l 2,4-D and 0.5 mg/l BAP callus during the entire culture periods. POD isozyme C3 was the main cathodic POD isozyme expressed in NAA and BAP callus, while C1 was the main in 2,4-D and BAP callus. However, anodic POD isozymes, A1, A2 and A3 were expressed with similar activities in both hormone combinations.

키워드